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Finding the Fourth Proportional to 2,489.15, 3,728.08 and 2,062.08

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Solution

The fourth proportional to 2,489.15, 3,728.08 and 2,062.08 is: 3,088.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,489.15 : 3,728.08 = 2,062.08 : x
  2. Step 2: Convert to fraction form
    2,489.15/3,728.08 = 2,062.08/x
  3. Step 3: Cross multiply
    2,489.15x = 3,728.08 × 2,062.08
  4. Step 4: Simplify right side
    2,489.15x = 7,687,599.21
  5. Step 5: Solve for x
    x = 7,687,599.21/2,489.15
  6. Step 6: Final answer
    x = 3,088.44

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.